Stephan Assmus <superstippi@xxxxxx> wrote: > Hi Euan, > > Euan Kirkhope wrote (2007-07-25, 12:37:46 [+0200]): > > I've looked at this also when trying to fix an IDE DMA issue with my > > desktop chipset. Couldn't really figure it out at all, and I was only at > > > the kernel level! > > I appear to have the same problem with my chipset. Luckily, ZETA apparently > tries to re-read after DMA timeouts, whereas Haiku goes into KDL > eventually, with "Device timeout" panics. Would be great if this was fixed. While I have never seen haiku panic that way, we do indeed have bugs in the DMA handling. Even vmware complains, and haiku does a couple of useless device resets because DMA inside vmware is failing. http://dev.haiku-os.org/ticket/1176 http://dev.haiku-os.org/ticket/985 I added some dprintf info in http://svn.berlios.de/viewcvs/haiku?rev=19990&view=rev I really tried to find the root cause for about two days, but the IDE code is really crude, and then I gave up (back in January). > The problem seems to depend on how many harddrives I connect. With one PATA > > drive, I can boot and use Haiku. With an additional SATA drive (in IDE > compat mode), I can boot and use ZETA from the SATA drive, but I get tons > of IDE DMA timeouts after a couple of minutes use. Windows would only > install with the lonely PATA drive in place, and it doesn't boot as soon as I have a similar problem. With Haiku, and with Windows. > the SATA drive is connected. With another SATA drive and no PATA drive, I > can barely use ZETA, because the DMA timeouts get really bad. I can boot I'm not using zeta. > Haiku from that drive, but when it tries to write back the pages (sync) > everything file related freezes and then I get the KDLs with the Device > timeout errors. With the first SATA drive as only drive, I can use ZETA no kdl here, but the same proble,. > fine, but Haiku doesn't boot because BFS produces a read-error during boot, > so that it doesn't even find the boot partition... I think my chipset or > rather the BIOS is really bad :-\ What system do you use? regards Marcus Viel oder wenig? Schnell oder langsam? Unbegrenzt surfen + telefonieren ohne Zeit- und Volumenbegrenzung? DAS TOP ANGEBOT FÜR ALLE NEUEINSTEIGER Jetzt bei Arcor: günstig und schnell mit DSL - das All-Inclusive-Paket für clevere Doppel-Sparer, nur 34,95 ? inkl. DSL- und ISDN-Grundgebühr! http://www.arcor.de/rd/emf-dsl-2